Can swordtails live with zebra loaches?

Verdict

Yes

Yes. Swordtails and zebra loaches make a good pair. Both are fine at 73–79°F. Plan on at least 30 gal.

Why it works

Both are fine at 73–79°F.
pH 7–7.5 suits both.
They use different parts of the tank: swordtails the mid, zebra loaches the bottom.

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Can swordtails live with zebra loaches?

Yes. Swordtails and zebra loaches make a good pair. Both are fine at 73–79°F. Plan on at least 30 gal.

What temperature suits both swordtails and zebra loaches?

73–79 °F. Swordtails need 72–79 °F, zebra loaches need 73–79 °F.

What size tank do swordtails and zebra loaches need together?

At least 30 gal, set by the swordtail. Add space for each extra fish.